This book is for people wanting to study Korean at an intermediate level. The book starts off with phrases that are transcribed into the international phonetic alphabet (IPA), which having no prior knowledge to this can be difficult (you need to learn the Korean alphabet not the IPA!) Also the exercises and answers in the back of the book do not match. This seems to be an error in the editing, but it is still not acceptable for a 25 pound book. This is not a problem if you have someone to show you, however if you are studying alone it can become very confusing.
The book is quite expensive, other books such as Colloquial Korean (Routledge) are a much better way to start studying Korean language.